U1893
Hybrid Control Module Lost Communication With Powertrain Control Module
U1893 is an OBD-II diagnostic trouble code meaning: Hybrid Control Module Lost Communication With Powertrain Control Module. Common causes: broken or damaged can bus wires, malfunction of the hybrid control module (hcu). Estimated repair cost: $56–278.
Symptoms
- Check Engine Light Is On
- Reduced vehicle power
- Switching to emergency mode
- Problems with charging/discharging the traction battery
- Incorrect operation of the hybrid system
Causes
- Broken or damaged CAN bus wires
- Malfunction of the hybrid control module (HCU)
- Problems with the engine control module (PCM)
- Short circuit in communication circuit
- Poor contact in connectors
How to Fix
- Check the integrity of the CAN bus between the HCU and the PCM
- Inspect connectors and contacts for corrosion or damage
- Check power and ground of both modules
- Read error codes from both modules for additional diagnostics
- If necessary, replace the faulty module or restore the wiring
Related codes
FAQ
What does the U1893 code mean?
U1893 is an OBD-II diagnostic trouble code that indicates: Hybrid Control Module Lost Communication With Powertrain Control Module
What causes a U1893 error code?
The most common causes of U1893 include: Broken or damaged CAN bus wires; Malfunction of the hybrid control module (HCU); Problems with the engine control module (PCM); Short circuit in communication circuit.
How do I fix a U1893 diagnostic trouble code?
To fix U1893: Check the integrity of the CAN bus between the HCU and the PCM. Inspect connectors and contacts for corrosion or damage. Check power and ground of both modules. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U1893?
Limited driving only, diagnose soon
How much does it cost to fix U1893?
The estimated repair cost for U1893 is $56–278. Actual cost depends on your vehicle, location, and labor rates.
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